Research on the setting of vertical clearance under the overpass bridge

摘要

Based on the frequency and severity of the collision accident of overpass bridge and superelevation vehicle, in order to improve the safety of the opening traffic under the overpass bridge, through the research for the overall dimension limiting value of vehicles used on the road, refer to the foreign setting value of the headroom clearance on the road and under bridge as well, according to the feature of the road under bridge and use the contrast and analysis method, give a new proposal value to the roadway vertical clearance under the overpass bridge in our country. This value can meet the traffic demand in the current and future.